Typewriting machine



M. c. CRAWLEY TYPEWRITING momma Original Filed April 8, 1918 3 Sheets-Sheet 1 7v I n W6 0 u. Q 4 m H mm mm aw M. R awn nu R N M Q Rm E n 3 Sheets-Sheet 2 wfi mvgwoR ATTORNEY M. C. CRAWLEY TYPEWRITING MACHINE Original Filed April 8, 1918 Jui 29, 1924.

July 29, 1924.

M. c. CRAWLEY TYPEWRITING MACHINE ATTORNEY? Patented July 29, 1924;

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pplic ti n ed apri 8, 1918, seria te- 2,% @e9.-; v e eiw13elean .4-

oall hemitmay WWW? Be. it kn 7 at, ANWWL CRAWLEY1 a it zen Qt he U it d St t and resident of Groton, county of Tompnsian ta ex N wY ls ev i uiite certa n newand usefnllmprovements in operation after; the carriage has;;travel ed any p ede ermined stan e n s t e spa ng mo me endmean iqw na al y. s nding n; larm a h ri e aproaches the, limit of the letter-spacing.

o m n f r h h aid ee e m ch n s is set. V

The mechanism shown in the drawings is especially designed for use in connection with power-operated typewriting machines constructed as shown in my Patent No.

1,156,061, dated October 12, 1915, but it will be obvious that the invention is adapted to be used in connection withother forms of typewriting machines. I

This application issubordinate-to my application'Serial No. 592,525, filed October 5, 1922, and allowed August 29, 1923,- wherein subject matter generic tothe two applica-,

tions is broadly claimed.

The invention has for one of its objects the provision of simple line locking mecha-' nism which may beset to automatically lock;

the platen carriage, type bars and key levers against movement when the carriage has traveled a predetermined distancein its-letter-spacing movement, and'to provide means. operable by a key forming a part-of the key-i.

' board whereby the machinemay be operated at willtowrite a -line iof greater length than that forwhich saidlocking mechanism.

s, ti A? u her, obj ct of he nt n on s: to provide an indicator and-actuator-for a line. locking mechanism adjustable: along. the.

'eleof yp in mesh g a d; adapt to be engaged and operated-by anabutment on the; carriage to loek the printing" instrumentalities against further; operation when a line of thelengtli for which said indicator;

is adjusted has been'written.

A oth biettotik v et eai t Pr -.4 r li e l kin mel ee ee pan 1 roll I of, the carriage.

operated typewriting machine, adapted to,

hold the power releasing trip device against operation when a line of the desired length hi fi @691 W t i i i 7 A i 'eri bi Ot e inri ien is t P evide ailing-end alarm for a typewriting-mw chine, operable automatically by a prelim-,

inary movement of a line-lock mechanism to sound an alarmin advance of the locking of the printingmechanism against operatiorn A further object of the invention is to pro videfa combined line locking and line-end alarm mechanism having a combined indicator and "actuatin device adjustable along the 'frontof 'theima'chine in cooperation with the 'scalc and operable by a supporting In the'drawi'nga Fig l is a fragmentary vertical longitudinalsectional view; of a typewritingmachine provided with the improved alarm and line-locking mechanism;

Fig. 2 a fraginent-aiy'plan view of the machine I "Fig.3 a detail view showing the adjustable indicator and actuator forthe line-locking and alarm mechanism; i

Fig." 4 av fragmentary; vertical sectional view showing the key-operated releasing mechanismin side elevation; and

Fig f5 a fragmentary vertical transverse sectional view on the line VV of Fig. 1.

As shown, the machine is provided with V a. main frame 1, key levers 2 pivotally supported on one or more transversely extending rods 3 held in the main frame, type bars 4 pivotally supported at 6 in a suitable type segment7, and a platen 8 journaled in a suitable carriage 9. The. carriage 9 may be ofany. suitable construction and may be supported at its rear edge in any suitable manner, to-travel transversely of the main framelduring its letter spacing movement. An antifriction supporting roller 10 is journaled on astud 11 projecting forwardly from thefroht rail 12 of the carriage 9, said roller being'located midway the length of the carriage and adapted to'travel along a traclf l d, held to thefframe l, to support the front edge of the carriage.

Tlietivpe bars 4 are adapted to be moved upwardly-and rearwai dly toward the platen by apower-o-perated segmental universal. actuator, such as that shown in the; patent and plie t e f he e o o fine 0, w i eet letell i ada ted it? n e heir rear ends of arms 5 which are pivotally held at The bar 40 is normally held in the posild to rearwardly and downwardly extending projections 15 formed on the type bars. The free rear ends of the series of arms 5 are supported on a segmental bracket or support 16 and are normally held in engagement with said bracket by springs 17. The

rear ends of said arms are adapted to be raised into thepath of the power-operated actuator by upwardly extending arms 18 I pivotally connected at their lower ends at shown in Fig. 1.

19 with the rear ends of the key levers 2.

Each arm 5 is formed with an inclined or cam surface 20 adapted to engage a segmental universal trip bar 21 and force said bar rearwardly when the associated key lever. 2 is operated; The bar21 is rigidly held to a bar22 which is pivotally connected at its ends at 23 with the lower ends of a pair of forwardly and rearwardly swinging arms 24: pivotally held to the framein any suitable manner. The bar 22 is connected by a link 25 with a pivoted hook or latch 26, the link 25 being pivotally connected with the lower end of the hook at 27 and thehook being pivotally held at 28 to a suitable bracket 29 secured to the frame. 1. j

The hook 26 is adapted to engage the outer end of a crank 30, looselymounted on a constantly running motor-driven shaft 31, to normally lock the crank in the position by a link, not shown, with a'universal actuator, and is adapted to control said actuator through a pawl 32 mounted on the crank and adapted to be moved by acam 33 into and out of engagement with a ratchet wheel 34 fixed on shaft 31. The universal actuator isnot shown as said actuator and the mechanism for operatin'gthe same. are constructed and operate substantially as shown and described in the "patent and application heretofore referred to.

The line locking and line-end alarm mechanism shown in the drawings may be adjusted to sound an alarm and lock the key levers, type bars and universal trip device against operation after a line of any predetermined length has been written. ,T he universal trip mechanism, type bars and key levers are all held against movement by a single transversely swinging latch bar 35 pivotally held intermediate its ends on a horizontal stud 36 secured to the frame 1. The lower end of latch 35 is offset rearwardly and formed witha laterally projecting portion 37 normally heldcout of the path of hook 26 by a spring 38. A suitable stop pin 39 limits the movement of the latch 35 under the tension of spring 38, and said adapted to engage the edge of latch 35 adja- Gent the upper end of the latch,

The crank 30 is connected in brackets or supports 44: held to frame 1.

The sleeve 42 is freely slidable lengthwise of shaft 43 and is held to said shaft to rotate therewith by means of a key 42 which is slidable in a groove 45 in said shaft.- A

forwardly extending arm 46 is loosely pivoted at its rear end in a groove 47 insleeve 42 and is adapted to shift said sleeve longitudinally of shaft 43, and is also adapted to rotate on said sleeve to permit an abutment 48 on said arm to be moved into and out of engagement with the teeth of a rack 49. The rack a9 is formed on the lower edge of a scale plate 50 and the teeth of said rack coincide with the graduations of the scale 50. The pivoted adjusting and locking arm 46 is provided with a pointer 51 cooperating with the scale 50, and said arm is normally'forced toward the rack 4.9 by a spring 52 to hold the locking abutment 48 in engagement with the teeth of rack 49. The rear end of spring 52 is held to sleeve 4-2 and the free forward end of said spring engages under the arm 46 and normally forces said arm upwardly. A rearwardly extending arm 53 is rigidly held to sleeve 42 to rotate and slide therewith, and a cam having oppositely inclined faces 54 and 55 and an intermediate flat face 56 is rigidly supported on the rear end of the arm 53 in the path of the carriage-supporting roller 10, the portion 56 of said cam being normally held above the plane of the'bottom of track 13, as shown in Fig. 3.

The rock shaft 43 is provided with a de-' pending rock arm 57 rigidly held at its upper end to said shaft adjacent the lefthand end of the shaft and pivo-tally connected at 58 with the forward end of a link 59. The rock arm 57 extends downwardly through a suitable elongated slot 60 in the frame (indicated by dotted lines in Fig. 1), and the rear end of link 59 extends upwardly and is pivotally connected at 61 with one arm of a bell'crank lever 62 pivotally held to the frame 1 at The other arm of the: bell-crank lever 62 has a pinand-slot connection 64.- with the left-hand end of the reciprocable bar 40.

With the construction above described it will be obvious that by depressingthe forward end of arm 46 the actuator may be adjusted longitudinally of rock shaft 4.3 until pointer 51 registers with the desired graduation on scale 50., and that when said arm 46 is released the spring 52 will hold the lockingcabutment 1&8 iniengagement with rack 49 ,and ithus :lockzthe actuator in its adjusted position.

Asthecarriage 9 preaches the :limit of the letterspacing movement :for whichtheactuator i'sset the roller 10 willri de over the long inclined race otoffthe camonarmfiS of the ac-" tuator, thus gradually rocking shaft 43 and arm 57 and pulling "link 59 forwardly.

Owing-to the lost motion inth e pin-and-slot connection .64 the initial downward move ment of thecamuand arm 53 andthe forward-movement of link :59 does not effect a0. This initial movement of the ac- -from-aii alarm belli69. Theclapper ispivoted to :a bracket =70 held to frame l t-and is -noi mal ly forced toward the hell by a spring 7 1,,and-tit wi ll :be obvious that as lpawl'fio is pulled forwardly -it -will first i depress the clapper 67 andthen release the same I V whereupon the spring 371 will cause thewclapper tolstrike-the bell '69, thus sound ing'an' alarm to warnthe operator that the travel; 7 V 7 A further movement of the carr age will carry the roller upon the flat orhighest surface 56 of-the cam, thus pulling link 59 forwardly'to a greater extent and causing the bell=crank lever 62 to force the bar toward the right-hand side of the machine, It will be seen that this movement of bar 4:0iWi11rO C1 thelatch 35 and force the pro- I jecting lower end 3.7 thereof behind the trip latch :26, thus preventing rearward movement of said latch 26', link 25, bar 22 and .the universal trip bar 21, and locking the trip bar and type bars against operation.

It will be observed also that the trip bar 21 will prevent upward movement of the type bar opera-tingjarms -5 and the arms 18, thus locking the key levers against opera- :ingiapart ofthe keyboard of the ,machine.

'The "key '72 is supported on the forward L end of Ia key lever, 73 pivotally mounted on one ofthe transverse-pivot rods 3' which support theprinting keys. A vertically reciprocable arm M-ifs pivotally connected at 7% with the melease key lever 7:3, and its upper is-slidably held in suitable "guided F6 *held to the name- 1. The upper the-vertically movable arm 74: is beveled at r?7'-.and is adapted to engage the -.-rea-r vedge of the -=rigl1t-l and end of horiis pivotally, held intermediate; its ends to the frame 1 on a depending stud or pivot pin 79, and has a -pin-land-slot connection :80

at its inner or left-hand end with the adjacent end of-barlO. 1

depressing the releasing key 72 the operator may shift latch 35 out of the path of a the trip hook 126,, thus permitting further operation of t e pr ntinginstrumentalities to write additional characters or words upon the same line after said instrumentalities have been lockedagainst operation by the automatic line-locking mechanism. It will be obvious that ;when lgey 72. isj-depressed,

arm 7l-will be lifted and the -cam edge 77 thereof-willroek lever 78 an'd-foree-the end of bar i0 rearwardly past-the edge oflatch 35,:thus permitting-spring 38 to pull the to be readily returned to the, rightehand sideeof-i-the machine if the machine-is operated subsequently ;-to release of {the line lock ;mecha-nism by key 72, sufiiciently to cause the roller 10 ;to pass to the left of the actuator. imrrmge pp mg the lim t of its What I claim is: l

-1. In-a typewriting machine having a source of power and a universalpoweroperated type-bar actuating device, the combination of type-,barseleeting means, a latch normally locking the type-bar actuating demined point to shift said stop member into engagement with 'said latch to prevent release of the'latch by said latch-releasing means.

2; In a typewriting machine having a .source of power and a universal poweroperated-type bar actuating device, the combination of type-bar, selecting means,-a latch normally locking the type-bar actuating device against movement, means-for releasing said latch upon the .selection'of atype-bar zbygthe-type-bar selecting means, .a traveling platen carriage, a stop member, mechanism operable automatically upon movement of the carriage to a predetermined point to shift said stop member into engagement with said latch to prevent release of the latch by said latch-releasing means, a re-' lease lie, and connections between said key and said mechanism for disengaging said stop and latch upon operation of said key.

13. a typewriting machine, the combination of a frame, a platen carriage mounted on rollers, a rock shaft extending transversely of theframe, a line lock trip aei t. a entree-s le er le er 58 fili iab iv-gl e fl to :Said shaft and adapted to rock the same when depressed, printing mechanism, line lock mechanism operatively connected with said rock shaft and adapt ed to prevent operation of the printing instrumentalities when the trip is depressed, the trip and carriage being relatively so positioned that the carriage in its letterspacing movement transversely of the frame causes one of its rollers to depress said line lock trip.

4:. Line-locking mechanism for typewriting machines having a traveling platen carriage, comprising a member shiftable from a normal inactive position to an active position preventing printing, an endwise and laterally shiftable bar independent of said member, means operable upon movement of the carriage to a pretermined point for shifting said bar endwise to cause the same to move said member to its active position, a release key, and connections between said key and said bar for shifting the bar laterally to release said member to permit said member to return to normal, inactive position irrespective of the position of the bar.

5. In a typewriting machine, the combination of a frame, a rock shaft extending transversely of the frame, a carriagesupporting track extending transversely of the frame adjacent said rock shaft,

ta platen carriage having a supporting roller adapted to travel upon said track, printing mechanism, a line locking device operatively connected with said rock shaft and adapted toprevent operation of the printing mechanism, and a rock arm adjustable longitudinally of said rock shaft having its free end extending in the path of said carriage-supporting roller and adapted to rock said shaft when its free ,end is depressed by said roller.

' 6. In a typewriting machine, the combination of a frame, a rock shaft extending transversely of the frame, a carriage-supporting track extending transversely of the frame adjacent said rock shaft, a platen carriage having a supporting roller adapted to travel upon said track, printing mechanism, a line locking device operatively connected with said rock shaft and adapted to prevent operation of the printing mechanism, a rock arm adjustable longitudinally of said rock shaft having its free end extending in the path of-said carriage-supporting roller and adapted to rock said shaft when its free end is depressed by said roller, means for locking said rock arm in its adjusted position, and key-operated means for'releasing said line locking device.

7. Line-locking mechanism for typewriting machines having a traveling platen car riage, comprising a pivotally supported looking member adapted to prevent operation of the printing means, a spring normally holding said member out of locking position, a

' bar independent of said locking member, an

adjustable carriage-operated trip, connections between said trip and said bar for shifting the bar endwise transversely of the pivotal axis of the locking member to rock said member to locking position, and manually operable means for shifting said bar laterally relatively to the locking member to release said member 8. In a typewriting machine, the combination of a frame having a scale-carrying bar at the front thereof, a downwardlyfacing rack held to said scale-carrying bar, a carriage movable transversely of the frame, printing mechanism, a line locking device adapted to prevent operation of the printing mechanism, a lineend alarm bell, a bell clapper, a trip device mounted on the frame and adjustable longitudinally of the scale-carrying bar, a spring-pressed latch pivotally held to said trip device and adapted to normally swing up and engage the teeth of said rack to lock the trip device in its adjusted position, a pointer carried by said latch extending upwardly in front of said scale bar, means movable with the carriage adapted to actuate said trip device, an operating connection between said trip device and said line locking device, and means carried by said operating connection adapted to operate the bell clapper in advance of the operation of the line locking device.

9. In a typewriting machine, the combination of a frame, a carriage movable transversely of the frame, a line-end alarm bell, a bell clapper, power-actuated printing mechanism embodying a release trip, a line looking device adapted to prevent operation of the printing mechanism by locking said release-trip, a trip adjustably mounted on the frame and operable by the carriage, and operating connections between said trip and the bell clapper and line locking device adapted to actuate the bell clapper and linelocking device in succession.

10. In a power-operated typewriting machine, the combination of a frame, a carriage-supporting track, a carriage having a supporting roller traveling on said track, a rock shaft supported on the frame parallel with said track, a rock arm adjustable along said shaft and adapted to rock the same and having a cam portion normally extending in the path of said roller, type bars, a trip device operable to permit power mechanism to actuate the type bars, a line lock device adapted to hold said trip device against movement, and an operating connection between said rock arm and said line lock device adapted to shift said line lock device to locking position when the rock arm is depressed by the carriage-supporting roller.

11. In a power-operated typewriting machine, the combination-of a frame, a carlevers, a universal trip device operable by the key levers topermit power mechanism to actuate the type bars, a pivoted latch adapted to hold said trip device against movement, an operating connection between said rock arm and saidlatch adapted to shift the latch to locking position, and a spring normally holding said latch out of locking position.

12. In a power-operated typewriting machine, the combination of a frame, a carriage-supporting track, a carriage having a supporting roller traveling on said track, a crock shaft supported on the frame parallel with said track, a rock arin adjustable along said shaft and adapted to rock the same and having a cam portion normally extending in the path of said roller, type bars, key levers, a universal trip device operable by the key levers to permit power mechanism to actuate the type bars, a pivoted latch adapted to hold said trip device against movement, an operating connection between said. rock arm and said latch adapted to shift the latch to locking position, a spring-normally holding said latch out of locking position, a release-key lever forming a part of the keyboard, and

bar adapted to engage the locking device and push it into locking position, and independent key-operated devices for shifting this bar laterally out of engagement with the locking device to permit the locking device to assume a non-locking position, for the purpose set forth.

14. Line-locking mechanism for typewriting machines having a traveling platen carrlage, comprising a member shiftable from V a normal inactive position to an active position preventing printing, an endwise and laterally-shiftable bar independent of said member, means operable upon movement of the carriage to a predetermined point for shifting said bar endwise to cause the same to movesaid member to its active position, a release key, and connections between said key and said bar for shifting the bar laterally to release said member to permit said member to return to normal inactive position irrespective of the position of the bar.

15. Line-locking mechanism for typewriting machines having a traveling platen carriage, comprising a pivotally-supported locking-member adapted'to: prevent operation of the printing means, a spring normally holding said member out of locking position, a bar independent ofsaid lockingmember, an adjustable carriage-operated trip, connections between said trip and said bar for shifting the bar endwise transversely of the pivotal axis of the lockingmember to rock said member to locking position, and manually-operable means for shifting said bar laterally relatively to the locking member to release said member and thus permit it to instantly return to inactive position irrespective of the position of the bar.

This specification signed this 4th day of April, A. D. 1918.

MANSFIELD C. GRAWLEY. 

